Last year my father in law bought a project tractor that was the model that his dad used when he was a kid. I don't know much about it other than than it's a 650. He took the head off and I know he will need one piston and probably a sleeve. Not sure what he will be needing as he gets deeper into it. Does anyone know of any good sources for parts for these things? I know they are kind of a low-production model. Maybe you have a parts tractor laying around and I could point him your way when he runs across something he needs? Any help would be appreciated.